Process for the production of a solvent for fat



UNITED PAUL DIETZE, OF CHEMNI'I'Z, GERMANY.

PROCESS FOR THE PRODUCTION OF A SOLVENT FOR FAT.

No Drawing.

, production of a solvent for fat.

In various industries, e. g., in the textile and in the leather industry, pure hydrocarbons or derivates of the same are mostly used for scouring material which contains much fat.

The inconveniences of this working method are generally known. In order to avoid considerable loss of hydrocarbon it is neces sary to use closed vessels such as autoclaves working at high temperatures.

The improved process according to this invention has for its object to transform the hydrocarbons and their derivates into such a state that they are soluble in water so that the diluted solutions contain the hydrocarbon or its derivates in such a finely distributed state that the diluted solutions permit of obtaining the same effect as the undiluted hydrocarbons. A further advantage is that it is possible to work in open vessels even at increased temperature if the diluted hydrocarbons are used.

There have already become known compounds which consist of hydrocarbon and comparatively small quantities of soap, which form however an emulsion in consequence of a rather high content of water. They are designed to be used as washing substances to be added to washing liquids in which they distribute themselves uniformly.

It is further known to produce the soap which serves for the emulsion by neutralization of the fatty acids which have been add ed to the hydrocarbons.

In contradistinction with these known' working methods the process according to this invention has for its object to produce a clear homogeneous product adapted to be admixed with water in any proportion and to produce a lasting emulsion. This improved process consists in dissolving small quantities of fatty acid of any kind in the cold, in the hydrocarbons orin the derivates Specification of Letters Patent.

Patented Feb. '7, 1922.

Application filed January 11, 1921. Serial No. 436,607.

of the same and in addingto the solution a mixture of equal parts of alcali lye and alcohol,until a clear product .is obtained which produces a lasting emulsion when being admixed with water in any proportion. The quantities of fatty acid, used for this purpose, amount from 1 to at the utmost 5%. Herefrom results that the foreign substances used for preparing the compound are practically without any consideration for the purpose for which the compound is used, the effect of the compound being determined exclusively by the kind of hydrocarbon or of hydrocarbon derivate.

Ewmngvles.

1. 20 grains of colza-oil acid are dissolved in 1000 grams of benzine whereupon, under continuous stirring, a mixture of 8 grams of solution of caustic potash of 50 Be. and 8 centimeters cube of alcohol is added.

2. 50 grams of oleic acid are dissolved in .1000 grams of trichloridev ethylene and admixed under continuous stirring with a mixture of 20 grains of solution of caustic potash of 50 B. and of 20 centimeters cube of alcohol.

I claim 1. Process for the production of a solvent for fat consisting in dissolving in the hydrocarbons designed to be used for dissolving the fat, fatty acid in a proportion of 1 to of their weight, and in adding to this solution a mixture of equal parts by Volume of a strong alcali solution and alcohol until a clear liquid is produced which gives a uniform emulsion if admixed with water in any proportion.

2. Process for the production of a solvent for'fat consisting in dissolving in the derivates of hydrocarbons designed to be used for dissolving the fat, fatty acid in a proportion of 1 to 5% of their weight, and in adding to this solution a mixture of equal parts by volume of a strong alcali solution and alcohol until a clear liquid is produced which gives a uniform emulsion if admixed with water in any proportion.

Intestimony whereof I affix my signature in presence of two witnesses.

PAUL DIETZE.

Witnesses:

JUsTIzRAs DE GUHNE,

Fnnonrorr R nnienn.

all-Wm 

